Precor 2625 Premise Spray (covers 2625 square feet) is a unique water-based aerosol. Precor 2625 Premise Spray combines active ingredients that kill adult fleas and other insects, (Etofenprox) and has an Insect Growth Regulator, (Methoprene) to disrupt the life cycle of the fleas. Not only does it provide a long lasting residual activity (up to seven months), but it has a combination of ingredients,( tetramethrin and pyrethrin) for a quick knockdown. ACTIVE INGREDIENT (S) Etofenprox - 1.00% Tetramethrin- 0.25% Pyrethrins - 0.15% Piperonyl Butoxide* - 1.50% (S)-Methoprene - 0.09%